Weft-thread-control device for shuttleless looms employing weftthread inserters



Feb. 11, 1930.

J. iLIABLER WEFT THREAD CONTROL DEVICE FOR SHUTTLELESS LOOMS EMPLOYING WEFT THREAD INSERTERS Filed Nov. l0, 1927 y I l -4 /yiarney Patented Feb. 11, 1930 UNITED STATES PATENT OFFICE i J'OHANN GABLER, OF ETTLINGEN, GERMANY WEET-THREAD-CONTROL DEVICE FOR SHUTTLELESS LOOMS EMPLOYING WEET- THREAD INSERTERS Application led November 10, 1927, Serial No. 232,396, and in Germany November 16, 1926.

T his invention relates to a weft thread con trol apparatus for shuttleless looms in which by inserting the weft by means of grippers the length of the thread is determined by the gripper and is always of uniform length. As the grippers overlap one another at the middle, the weft is somewhat longer than it ought really to be and the extensibility of the different materials plays an important part,

so that the weft must be adjusted after having been inserted by the grippers up to the mid dle, this adjusting being carried out in the simplest manner by pulling the thread back a little after it has been cut off and transi 15 ferred to the other gripper, the thread being` pulled back such a distance that the cut oit end is lying in the edge.

' An embodiment of the invention `is illustrated, by way of example, in theaccompanying drawing in which A Fig. 1 is a 'front elevation showing the adj j usting mechanism.

Fig. 2 is a section on line A-B of rFig. 3. Fig. 3 is a view seen Jfrom above. Vhen the weft 1 has been pushed by the 1. In a weft thread control device for shuttleless looms of the type employing weft thread inserters, a lever mechanism cooperating with the thread delivered by the inserters,

and means 'for actuating said mechanism for u JOHANN GABLER.

weft inserter up to the middle of the warp I shed and drawn by the second weft inserter, the weft 1 would project about two centimeters over the edge 3 (position I). To adjust the weft to the right length, it is drawn back by lever 1i in the following manner. The thread runs under a lever 5, through guide eyes 6 and 7 and through a guide eye 8 in the lever t into the warp shed. From the sha't9 an eccentric 1() is set in motion and acts upon a roller 11 on a lever 12. At the rotation of the eccentric 10 the lever 12 is raised by the action of a spring 13, when the roller 11 engages with a recess 14, and the lever 4c, coni held by the lever 5. On the lever l an adjustable screw 15 is arranged by means of which the thread may be adjusted to 'a longer or shorter length.

I claim 

